A search was under way Memorial Day Weekend for a missing hiker in Kings Canyon National Park/NPS

A 67-year-old Washington man bidding to hike the entire Pacific Crest Trail south to north was believed to be missing in Kings Canyon National Park, where he was last seen on May 18.

Park staff said Sunday that Stephen McGuire, whose trail nickname is “Bible,”  was last seen near Kearsarge Pass by another hiker who noted that Mr. McGuire seemed tired and low on food. He was reported missing to the U.S. Forest Service on Wednesday, May 23rd. 

Mr. McGuire has not yet collected his next planned food resupply, located in Mammoth, California, a release from Kings Canyon said. His previous resupply would have lasted him until approximately May 22nd. While Mr. McGuire is an experienced hiker, he is not familiar with the area, and higher elevations in the Sierra Nevada have experienced winter storm conditions in recent days, the release added.

Mr. McGuire was described as standing 5-foot-6 inches tall, athletically built, Caucasion, with black hair and a beard, both partially gray. He was outfitted with a black puffy jacket and believed to be carrying a green backpack and green tent. 

Personnel from the Sequoia and Kings Canyon national parks were currently working with Inyo National Forest and the National Park Service Investigative Services Branch to gather information that will aid in the search for Mr. McGuire. If you have any information, or if you have hiked between Mt. Whitney and Reds Meadow since Thursday, May 10th, whether or not you think you saw Mr. McGuire, you are asked to call the tipline at 888-653-0009.